Fuse



Patented Jan. 30, 1923.

UNITED STATES PATENT OFFICE.

ROY GRANVILLE SANDS, 0F WAUKEGAN, ILLINOIS, ASSIGNOR T0 FRANK B. COOK COMPANY, OF CHICAGO,

ILLINOIS, A CORPORATION OF ILLINOIS.

FUSE.

Application led April 21, 1919. Serial No. 291,688.

To all whom t muy conce/m.:

Be it known that I, ROY GRA NvILLn SANDS,

a. citizen of the United States, residing at Waukegan, in the county of Lake and State of Illinois, have invented new and useful Improvements in Fuses, of which the following is a full, clear, concise, and exact description, reference bein had to the accompanying drawing, forminga part of. this specification. My invention relates to improvements in electric fuses of that type known as rechargeable or re-fillable fuses and in which there are provided means for detachably holding the fuse strip in position, so that when the strip becomes destroyed a new strip may be inserted without discarding thc entire ifuse cartridge.

One ot the objects of' my invention is to provide a cartridge fuse ofi this type which shall consist oi' few simple parts which may be readily assembled and disassembled to permit the easy and ready renewal of the fuse strip.

Other objects and advantages of the invention will appear more fully hereinafter.

In the accompanying drawings I have illustrated certain embodiments of my invention, it being understood, of course, that the invention as set forth in the appended claims may take various Y'orms and be embodied in various structures without departing from the spirit thereof. In the drawings- Fig. 1 is a longitudinal sectional view of one form of fuse embodying myv invention',

Fig. 2 is a disassembled view of the fuse illustrated in Fig. l;

Fig. 3 is a longitudinal sectional view of a fuse ot' a different type embodying my invention; and

Fig. 4 is a disassembled vieu of the fuse illustrated in Fig. 3.

In the embodiment illustrated in Figs. l and 2` the fuse is of the knife-blade car.-y tridge type and comprises, as illustrated. an insulating cylindrical shell l. preferably 'formed oi fibre or like insulating material. A t each end of this shell there is arranged a metallic tei-rule 2. This ferrule is tightly secured on the shell proper in any suitable manner. lVithin the ferrule there is formed an annular shoulder 3, on which the supporting washer 4 is adapted to rest. This washer is of the same shape as the shell and being circular, and

as at 5, so that the fuse strip 6 can be bent over the edge of the washer and its end 7 lie flat on the outer face of the washer. A loop 8 is formed by the bending over of the f usestrip, and this loop, it will be noted, lies 1n the notch 5. Adapted to rest upon each washer 4 is a` second disc 9 having extended therefrom a knife-blade 10 and provided with an ear l1 also adapted to ft in the notch 5. It will be noted that the notches at the end of the fuse are oppositely disposed, so that the` fuse may extend diagonall y through the body of the shell. he cars 11 so situate the discs 9 that the knifeblades l() at each'eud are parallel. For holding` the dises 9 and the washers 4 in position a cap l2 is provided, which is internally screw-threaded and adapted to engage screw-threads on the ferrule 2. This cap is provided with an annular shoulder 13 adapted to engage over the edge of the disc 9, and when the cap is screwed home the disc is securely clamped in position and the end 7 ot the fuse clamped between the vwasher 4 and the disc 9, which in effect ilorms a part oi.E thc cap 12. A, small observation opening 14 is formed in the disc through which the rating of the fuse-w which rating is stamped on the end thereof`may be read.

In Figs. 3 and 4 I have shown a fuse which is not provided with knife-blades such as illustrated in Figs. 1 and 2. In these figures there is provided the same insulating shell 1 having the ferrules 2 fastened on the ends thereof, the ferrules having formed therein an internal shoulder 3 on which the washer 4 is adapted to be placed. The edge of the ferrule is notched, as at and the fuse 6 is adapted to be looped over the edge of the washer, in the same manner as described with respect to Figs. l and 2. In Fig. 3, instead of providing a knife-blade and. two-part cap, as illustrated in Fig. l, I have provided a. ca 15 which clamps down upon the end of the fuse to clamp the fuse strip between it and the washer 4. This cap is likewise provided with an opening 16 through which the ratine: tle inse may be read, Preferably the cap in4 both forms ot tuses 'is hnurled, as at ll', so that the saine :may bc easily rotated, to screw iton and oilf the ferrules.

llavingg thus described'niy intention, what Vl claim as new and desire to secure by Letters Patent, is: i

l. i vrechargeable elect ic ituse compris'- ingv an enclosing,` shell lia-i iin' metallic end.- pieces, a disc closingl each end ol'i said sliell, a 'fuse extendinglongitudinally oi" said shell and having its ends bent over and lying dat on said discs, a notchtorined in the edge ot each oit said end piecesto accommodate that portion oit-the tuse lying, outside ot the periphery oit the disc, andcaps secured on the shell end pieces and cooperating to clamp the bent-over portions otthe inse against the 'laces oi' the discs. Y. Y 2. ln a rechargeable electric fuse, the coin-V bination With an enclosing shelly having;` 1ne tallic end pieces severally provided with a notch formed in the edggje thereof, avftnse eztending throngi said shell having a loop at its ends lying in said notch7 a disc covering each` o'l' said end pieces. tittingl in said loop and having a portion otthe end ot the 'inse lying overits outer iliacc, and n :ap secured to each end piece and cooperating to clamp the overlapiliing portion o'l `the luso against the dise `and holding the parte in position. v y

3.,'The combination lwith :in enclosing,I shell having a notch in itsedge. at each end thereoifj oppositely .,clisposetl, a 4inse entending: through said shell and-thriving -a loop in ends lying in 'said notch,fa disc coveging,P the ends 'o-said shell;i tit-ting,I in said loop and having a portion of the end of the fuse lying overl its outer tace, and a cap secured on each end otthev shell and cooperating; to clamp the overlapping portions ofthe inse against the disc and holding the parts in position. l f i el.. A rechargeable electric fuse comprising` an insulatingishellbody, a metal terrulesecin-ed to each endet1 said bo'dy,-a disc engagn ing; each ot said 'l'ei'rules,a1tusc extending,` longitudinally ot the shell and `havin its ends bent over and lying/gilet on discs, said errulehaving; `notch formed: the edge thereofto acconnnodatethatl o5- tion `oif the fuse lying; outside of riphery of the disc, and cap secured to the iterrnle and cooperating to cla Yi the bentover portion ot'the iluseagainst the tace oi: the disc` l A rechargeable electric 'fuso comprisingr an enclosing shell bodyv` a metallic terrule secured to each end ot saidbody, a disc closing; vthe end of each ot said termios, a 'fuse extending longitudinally olfY said body and having its ends ,bent overand,I lying flat on said disc, a notch in the edge of cachot said 'terrules to accommodate that portion of the fuse lying outside oi? the periphery the disc, and a cap secured on the i'ierrule and .:ooperating to clainp the bent-over portion ot the inse against the Ylace ot the disc.

(3. A. rechargeable electric inse comprising an insulating shell body, a metallic 'lierrule secured to each end ot said body having an internal annular shoulder and a notch formed in its edge, a disc closing each oi? said tei-rules and resting on said shoulder, a fuse extending; longitudinally oi' said body and having its ends bent over and lying flat on said disc, the notch in the edge of said erV rule accommodating' that portion olf the fuse lyingioutside ot the periphery of the disc, and a cap securedv on each `errule and cooperating to clamp the bent-over portion ot the "l'nse against the tace of the disc.`

e rechargeable electric 'hiss comprising an enclosing shell having oppositely disposed notchestorrned `in its edges, a dise closing one end o'said shell, a 'l'nse extending longitudinally ot said shell and having one of its ends bent over and lying,` flat on the outside of said disc, one of the notches in the edges of said shell accommodating that portion of the fuse lying outside of the periphery of the disc, a second disc having a blade itornied thereon bearing on. said lirst disc and having a projection in its periphery fitting` in said notchji-or positioning said blade, and a cap secured on the end oisaid shell and. clampingsaid discs in` position. 1

S. A rechargeable electric fuse comprising an insnlatingshell body, a metallic lerrule secured on each end of sailb'ody, adisc closingijthe end 'oteachoiisaid ierrnles', a inse extending;*longitudinally of said shell and having its ends bent over and lying; .llat on said discs, a notchin the edgeof said shell to accommodate that portion olf the fuse lying outside ol the periphery of the disc, a second t isc having4 a blade secured thereon bearing' on said first disc and having a pro- `iection on its periphery fitting1 in said notch `foi-'positioningl said blade, and a cap secured on the end of said terrulc and clamping said discs in position.

5). fr rechargeable electric inse comprising; any insulating shell body, a metallic 'terr-ula at `each `end oty said bodyhaving an annular internal shoulder, a dise arranged `lWithin'the end of each oit' said ferrnles and resting on said shoulder, a fuse extending longitudinally .ot said shell and havingw Vits ends bent over'and lying dat on said disc,` ya notch in the edge ot the terrule to accommodate that portion ot the tnselying outside of the periphery of the disc. asecond disc having a'blade arranged within said errule and provided with an extension on its periphery fitting; Within sai d notch 'forpositioning said blade, and a can secured on vsaid ierrule and clamping said discs in position,

l0. An electric frise comprising an insuhating` tnbuler member1 a metal lie ferrnle ,feenrecl to enc-h entl thereof, :i closure member engaging eneh elE said ferrnles, a fuse extending' l-:mkeitnrlinall-r of' Said tnhillnir memher nml hating its ends lient-over to engage :grid Closure members7 an opening being,r 'mmeil iei'ernnrlinte earh closure member :mtl Cooperating lerrnle to accommodate the hond in the tese, a seeoml closure member for each eni'l olf Saiil tubular member having :t blade portion Secured thereto and bearing on said 'tiret closure member and provided with, menne eooperating,r with the adjacent terrnle 'for properlj,v iwsitioningr said blade portion` anal a Vnp seenretl to each of said fel'- i'nles for elampii'ig the adjacent closure members in position.

1]. An electric fuse comprising an insulating tubular member, a metallic ferrule sernrerl to earh end then-fof,y a closure member menging eeh ot Said ferrnles, a AFuse ex tending longitlnlinally of sail tubular mem-4 ber hiwinfr its enfle lient-over to engage Sai l closure members` an olliening being formed intermediate each elosnre member and its oopereting ierrnle to accommodate the henfl in the l'nse `whereby said tubular memher may he elosefl` at eaeh entl` a Second elosiire member ter each en l having n blmle seein-eil thereto anil Levering saiclfirst closure member, means for properly positioning said blznle portionsy with respect to each other`r und, a cap member for clamping each pair of closure members in position and Securing them to the ferrules. Y

In witness whereof, I have hereunto snb- Serihefl my name.

ROY GRANVILLE SANDS. 

